Method for permanently repairing and sealing roofs

Details Method for permanently repairing and sealing roofs Method for permanently repairing and sealing roofs

1994-04-11

1995-09-26

Friedman, Carl D.

Static structures (e.g., buildings)

Processes

Sealing

52514, 405152, E04G 2302

Patent

active

054525586

ABSTRACT:
A method is disclosed for permanently repairing roofs using a colloidal clay such as sodium montmorillonite (commonly called bentonite). A layer of particles of the colloidal clay is spread on the surface of the roof that is to be repaired so that the layer of colloidal clay covers any cracks or openings in the roofing material that are causing leaks. A membrane made of water impermeable material is then applied over the layer of colloidal clay particles so as to confine the particles underneath the membrane. During a rainstorm, water wets the colloidal clay, and the clay swells rapidly to form a water tight blockage between the roof and the membrane. Rain water cannot infiltrate beneath the membrane and thus cannot leak through holes or openings in the roof material that have been covered by the layer of colloidal clay and the membrane. The colloidal clay material is held permanently in place beneath the membrane, and thus the repair is a permanent repair rather than a temporary repair.

REFERENCES:
patent: 2631360 (1953-03-01), Ea-Sanford et al.
patent: 3345246 (1967-10-01), Sheahan
patent: 4712348 (1987-12-01), Triplett
patent: 4783942 (1988-11-01), Nunley
patent: 4810573 (1989-03-01), Harriett
patent: 5079088 (1992-01-01), McGroarty et al.
patent: 5158803 (1992-10-01), Haas
patent: 5226279 (1993-07-01), Rendon-Herrero

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